Portable bed



Nov. 23 1926.

N. SINCLAIR PORTABLE BED Filed April 14, 1924 INVENTOR.

ATTORNEY.

Patented Nov. 23, 1926.

, stares s'rrss NEIL sINoL A'IR, or OAKLAND, CALIFORNIA.

' PORTABLE BED.

Application filed April 14,1924. Serial No. 706,241.

My invention is particularly adapted to folding beds adapted to berolled about the floor or into or out of a closetor receptacle from theroom in which the bed is to be used.

vl/here the bed is folded or Lip-ended in the conventional manner, it isdesirable that the base or supporting portions should extend only overthe necessary area to support the bed in said collapsed position, thuseconomizing in floor space.

On the other hand when the bed is let down into position for use,because of the shifting of the centerof gravity it is necessary thatpoints of support embrace a much greater area as only in this way canthe bed be maintained in stable equilibrium throughout its movement.

In the bed of my invention I employ fixed points of support supplementedby movable points of support, the movement of the said supports beingaccomplished automatically when the bed is either opened out orcollapsed.

By referring to the accompanying draw-v ings my invention will bemadeclear.

Fig. 1 is a fragmentary plan view of one of the movable supportingelements.

Fig. 2 is a side elevation of a folding bed employing my invention inits down or usable position.

Fig. 3 is similar to Fig. 2 except the bed is up-ended in a collapsedposition.

Fig. 4: is a fragmentary side view of an alternate constructionemploying my invention.

Throughout the figures similar numerals refer to identical parts.

The head piece of a conventional bed frame is indicated by the numeral1, a foot portion at- 2 and the body portion at 3. The latter is pivotedat 4 to the frame member 5, rigidly connected with the base 6. The base6 is supported by a plurality or rollers as 7, 8, and is provided oneach side with aligned pivots 10, 11, fixed with the frame 6 and fromwhich pivots extend the arm or trussed movable members 12, 13, freelypivoting about 10 and 11. The arms 12, 13, are

0 rigidly fixed in the head 14 on which is swiveled the roller 15.

Pivoted at 16 from the body portion 3 is the link 17 whose other end ispivoted at 18 to the arm 13, these pivots being adapted to swivel totake care of the universal movement of the arm or a ball and socketconnecti'on may be substituted if preferred for .the pivotsand swivelsat each end of the weight of the body portion 3 and foot piece 2 withthe bed clothes thereon would carry the center of gravity of the wholestructure beyond the support of the rollers 8, and to prevent the bedoverturning at such time the arms 12, 13, are forced to swing about thepivots 10, 11, causing the rollers to swing around from the full lineposition of Fig. 3 to the dotted position of Fig. 1 and full lineposition of Fig. 2, thus giving a point of support horizontally wellbeyond the vertical center of gravity of structure at all times. It willalso be seen that the action is automatic and that when the bed iscollapsed in Fig. 3 the extending arms 12, 13, head 14:, and roller 15are folded out of the way so that no greater floor space is required forthe up-ended bed than is absolutely necessary.

While I have shown and described but one side of the bed it is to beunderstood that the preferred construction involves the use of theswinging arms 12, 13, and roller 15, on each side of the bed which swinginward or towards each other when the bed is upended and swing outwardto give the in creased base when the'bed is let down.

In Fig. lis shown a variation of my invention wherein a movable baseportion is shown at 21, which is given a parallel horizontal movement bythe arm 22 swinging about the pivot 23 under the control of the lever 24and the link 25, the roller 26 swivels on the member 21 and as the bedbody portion 27 is let down from the full line position intothe dottedposition the roller 26 moves outward from the full line to the dottedposition thus increasing the area of the supporting base as the centerof gravity of the structure is shifted due to the movement of the bodyportion 27.

In this construction the head portion is shown at 28 and rigid therewithis the frame loo llU

29 carrying the main pivots 30 of the body portion of the bed and astationary pivot at 31 for the link 24%.

It will now be seen that various combinations of levers, links or theirmechanical equivalents may be employed whereby the points of support maybe shifted outwardly as the bed portion descends, or collapse into areduced area when the bed is tip-ended, and I wish to be understood asclaiming all such.

I claim:

1. In combination with a bed having a folding portion and a base frame,a plurality of foot members positioned to support the up-ended bed, anarm pivoted on a vertical axis from said frame, support means on saidarm adapted to swing in the Saint plane as said members, a single linkswivelled at one end to the folding portion of said bed and swivelled atthe other end to said support means whereby the arm and support means isswung outward as the bed is let down and swung inward into collapsedposition as the bed is "up-ended.

2. The combination of a supporting frame with a bed pivoted near one endon a horizontal axis to said frame to swing from a vertical to ahorizontal position, a pair of auxiliary legs pivoted on vertical axesrespectively to said frame, and a link for each of said legsrespectively each connected by universal connections to the bed and aleg whereby the legs will positively be swung horizontally on their axesin coextension wi h the bed as the same is lowered and drawn in ward ina direction at right angles to the sides of the bed, as the same israised to vertical position.

NEIL SINCLAlR.

